Apparatus for the manufacture of cement tile



Dec. 28 1926.'

J. BROWN `APPARATUS FOR THE MANUFACTURE OF CEMENT TILE 1925 ll Sheets-Sheet 1 Filed Sept. 50

E Mw WN A Dec. 28 1926.

J. BROWN APPARATUS FOR THE MANUFACTURE OF CEMENT TILE 11 sheets-sheet a Filed sept. 50, 1925 Def:1 28,1926.' T 5 1,612,095

J, BROWN APPARATUS FOR THE MANUFAGTURE OF CEMENT TILE Fledept. SO, 1925 l1 Sheets-Sheet '.5

INVENTOR Dec. 28 1926.

- 1,612,095 J. BROWN APPARATS FOR THE MANUFACTURE OF CEMENT TILE Filed sepno, w25 11 sheets-shearJ 4 INVENTOR Dec. 2s, 192e. 1,612,095 J. BROWN APPARATUS FOR THE MANUFACTURE OF CEMENT TILE Filed Sept. 30, 1925 l1 Shee'r,s-SI1ee\l 5 INVENTOR m AQ, L @WM Dec. 28 1926. 1,612,095

`J. BROWN APPARATUS FOR THE MANYUFAGTURE OF CEMENT TILE "FiledSeptEO, 1925 ll Sheets-Sheet 6 Dec. 28 1926.

J. BROWN APPARATUS FOR THE MANUFACTURE OF CEMENT TILE .Filed Sept. 50, 1925 l1 Sheets-Sheet '7 mwN-ron Dec. 28, 1926. 1,612,095

J. BROWN APPARATUS FOR THE MANUFACTURE OFiCEMENT 'I'ILE Filed septfzo, w25 11 sheets-sheet s Ffyf *m "fm 6 Jlm INVENTOR J. BROWN APPARATUS FDR THE MANUFACTURE oF CEMENT TILE Filed septl 5o,

V1925 11 Sheets-Sheet INVENTOR Dec. 28 1926.

Filed Sept. 30

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J. BROWN APPARATUS FOR THE MANUEACTURE oF CEMENT TILE Filed Sept- 50. 1925 l 11 sheets-sheet 11 Patented Dec. 28, 1925.

yusiren erstes JAIvIT'S BRGVJN,`OF NEW' CASTLE, PENNSYLV T GN OF PENNSYLVANIA.

Application filed September 3G, 1925.

rhis invention relates to the manufacture orf earthen blocks or tiles7 and particularly to the manufacture of cement rooting tiles, slnhs, and the like.

According to the usual practice of manufacturing roofing tiles and slabs and the lilre3 the pallet of suitable 'form is set on a vfcrlr trible, after which a cement mixture containing only a very small amount ott water is heaped onto the pallet7 a reinforce` nient heir-gY put on the pallet at the proper time when such is desirable. Alter paclo insl the material in a proper fashion With e hloclr, the worlman passes a suitable lorin ing;` har over the pallet, scraping' away cr;- cess material. Then with his forming` har, which has a relatively small surface area, he temps the mixture into form. Obviously, such tamping is not uniform and is very laloorious7 time consuming and requires considerahle skill. l

l' nfier having tainped the tile sul'dcientl the worlnnan goes over the .surface of the hloclt with a hand troWel, smoothing it on, touching it up, filling in material Where neeoed and removing; it Where necessary.

llt the tile is to he colored, pigment is then .sprinkled over the block, together with cement` the pigment Wet with water, and then the Workmen Works the surface oil' the block with a trowel to spread the pigment. recording to the present inventioin it noposf l yio provide a machine for forming, 'ramping and trovvelingthe tiles, which will produce tiles oi" greater uniformity, hotter quality, and with considerable more speed then is possible with the present practice.

A further object oi' the invention is to provide improved means for handlingY the tiles or slabs upon thei cori'iplltion tfftacilitate the remove! thereo't from the n'uichine.

lhe invention may he readily understood reir-rence to the ziccompaniying;` drawings i 'ive practical embodiment of my invention, hutto the construction o't which the invention is not limited.

In the drawings:

Fi jure l is a side elevation ot' the assemhled machine.y with the jlorinino; head re- ,tractefl7 und the pallet elevated;

Serial No. 52?.,551.

Figure 2 is a sin'iilar view showing` the pelletlowered and the forming head moved tothe other end ot the machine;

Figure 3 is a transverse section on the line ll-lll of Figure 1';

F igure 4 is a plan view of the forming head;V

Figure 5 is an end vieu7 ot the storming head, showing the end opposite that shown in Figure S;

Figure G i. ing' head 5 ipgure 'i' is a detail sectional view through part of the 'formii'ig head, this section being substantially a vertical section on the line Fil-FH of Figure t;

Figure 8 is a detail section through the tninping har on the line VIH-VIH of Figure T 5 a side elevation ot the -torin- Figure 9 is a detail view of the adjusting,`

mechanism for the profile or tan'iping` har, representing a section on the line l-X ol Figure ll;

Figure l() is a detail of the lever holding` mechanism A Figures ll and l2 are detail views ot the friction holding means for one of the operating shafts of the device;

Figures 18, and 1.5 are details of a detent mechanism for restraining" one of the other operating shafts against movement;

Figure 1G is a developed view oi the detents und teeth oi the mechanism shovvn in Figures 13 t l5, inclusive;

F injure l? a detail view of a limiting stop 'tr profile har;

Figure i8 illustrates a transverse section through the bed 'of the machine and pallet 'in substantially the plano of line Klv/lillli'lll oit' Figure 2, the pallet elevating; enrrange heine' y adj ustahle or the shaft i'cr tiltingthe mechanism and removal on'iitted F igure i9 is an end view trein the left hand end of F injure l., showing` the pallet support dropped, and the pallet on the pnllet lowering; frame;

Fiiggjues 2O and 2l show views ot the pallet lowering' frame aparttroin other porn tions of the machine;

Figure 22 is a perspective view of the st-riker bar for removing excess material; and

Figure 23 is a section in the plane of line XXHI XXIII of Figure 22 showing the manner of mounting the striker bar.

Referring to the drawings, designates a suitable supporting frame and 6 are supplemental end supports. The'frame 5 includes upper spreaders 7 which support an inverted angular guide track 8 having a lip 821 extending therealong, as shown in Figures 5 and 18. Resting on the top flange of the angle track 8 is a substantially similar but reversed angle bar 9 having a lip 9a thereon. The longitudinally extending lips 8a and 9 are turned toward each other and are spaced apart. rl`his provides an enclosed guideway each side of the machine for the purpose hereinafter described.

Extending along the top of each guideway is a rack 1-0 which is preferably inclined transversely, as shown. The teeth of the racks may be protected by guard plates 11.

Set in the frame, preferably near the center of its length, is the pallet receiving platform 12. (See Figure 18). Bolts 13 in the frame of the machine provide a rest for the platform in the frame. By adjusting bolts 13 vertically the downward or lowermost limit of movement for the platform may be varied.

The pallet, which is removably set on the platform, is designated 14 and may have -suitable cores 15 thereon for producing ribs or beads or the like in the tile. Mounted on the top of the frame are brackets 16 that support positioning strips 17 between which the pallet is received and confined. Bolts 18 may be utilized to hold strips 17 in place, and 19 designates fillers by means of which the machine may be accommodated to the molding of blocks on pallets of different sizes and forms. A flared flanged strip 2O may be provided back of strips 17 to assist in retaining the cement mixture before it is packed in the pallet.

The platform 12 is preferably arranged to be raised and lowered at will. For this purpose a pair of transverse shafts 21 are mounted in the frame below the platform. One shaft has an operating lever or crank 22 secured thereto. Each of the shafts 21 has a crank arm 28, as shown in Figures 1 and 2, attached thereto, these arms being connected by a link 24. l/YJhen lever 22 is operated, both cranks rotate by reason of this connection. Each of the shafts 21 also carry arms or cranks 25. To these arms are connected toggle links 26 whose upper ends pivotally connect with the platform 12. Operation of lever 22 from @the position shown in Figure 2 to the position shown in Figure 1, raises the'platform 12. lWhen platform 12 lifts, it lifts the pallet'14 supported thereon. If there is a molded slab on the pallet, the slab, of course, would remain on the pallet. YWhen the platform is elevated, the cranks 25 are past dead center and shafts 21 can rotate no further, so that the platform will remain in elevated position.

lt may be noted here that after a slab or tile has been formed, the platform and pallet will be raised and the pallet with its block lifted olf the platform. The pallet is then set aside while the block setting thereon hardens. A new pallet is then set on the platform and lowered to the lowermost position in the machine.

To facilitate the removal of pallets having,y tiles thereon, a transf-er mechanism may be provided. This mechanism, which forms a part of the present invention, ma now be explained. inclined rails 2? are 1provided in the machine, and at the lower ends of these rails are movable extensions 28. These extensions may be aligned with rails 27, as shown in Figure 1, or tilted down to the position shown in Figure 2, by the operation of a system of levers including bell crank 29 and operating lever 80, as will be readily understood.

Mounted for movement on the rails 27 and 28 is a cradle 31 having rollers 82 and on the lower part thereof that engage rails 27 and 28. The forward rollers 82 never leave the rails 27. At the rear of the lower part of the cradle 31 is an upright 81'"L supporting a forwardly projecting overhanging extension 33.

As the cradle is pushed forwardly from the dotted line position of Figure 1 to the full line position, the extension 33 shoves under the elevated pallet, outside of the platform 12, the extension rising vertically by reason of the inclination of the track 2'?. At its forwardmost position, the extension 83 is just under the elevated platform. By rocking lever 22 to a slight extent to lower the platform 12, the pallet may be dropped until it rests on the extension The cradle may then gravitate down tracks 27 and 28 to the dotted line position of Figure 1, whereupon the pallet can be readily removed or transferred to conveying inschanism. Track section 28 may be dropped to get the cradle out of the way of the working head of the machine, and to facilitate the removal of the pallet.

A lug 3a adjacent roller 32 may be provided for contact with a yieldable cushion 85 near the lowermost end of track 2T, as best shown in Figure 2, for limiting` the travel of the cradle.

rlhe construction and operation of the tile forming mechanism per se may now be described. ln general, it includes a carriage or working head mounted for travel along the machine having a cross bar therein shaped to produce a surface of the desired lili) shape on the upper face of the slab, and referred to as a profile bar. This bar may be rapidly raised and lowered to tainp the material on the pallet, or it may be inclined transversely at a fixed elevation so as to function as a smoothing trowel as the carriage travels along the machine.

The carriage or working head of the machine includes a carriage frame 40, on the underside of which are hangers 4i and 42. There is a wide hanger 4l ateach side of the iframe and a narrow hanger 42. On these hangers are rollers 43 which are received in the guideways formed by side rails 8 and 9. The ledges 8 and 9a support the rollers, which are sufficiently large to prevent any considerable upward lifting of the carriage. The arrangement is also one where the tracks are protected from sand or cement, the tracks being covered so that sand or cement cannot fall thereon.

Extending across the carriage and in suitable bearings therein is a shaft 44 having a hand wheel 45 thereon. This shaft drives a gear wheel 46 meshing with rack l0 at each side of the machine through bevel gears 47 and 48 in housings 49. By operation of the hand wheel the carriage may b-e rapidly or slowly moved along the machine.

ln the carriage frame at each side thereof are vertical guideways 50 in which are sliding shoes 5l, as shown in Figure 7, of a vertically reciprocable cross head 53, which is suspended from brackets 54 on the carriage through a system of toggle levers 55 and adjuster 56. A crank 57 at the top of each system of toggles provides an operating elementtherefor. l/Vhen cranks 57 are oscillated through a limited arc, the toggles function in a manner well understood by reference to the accompanying drawing, to raise and lower the cross head.

Hung from the cross head 53 is a cross bar 58 which is longitudinally grooved to receive the interchangeable profile bar 59. By reference to Figure 8, it will be seen that the bar 58 has a convened upper surface against which the concaved lower face of cross head 53 bears. This is to permit bar 58, with bar 59, to be transversely tilted on trunnions 60 carried by depending lugs 6l on bar 58 as an axis. Trunnions 60 have a bearing in brackets 62 suspended from the cross head. An upwardly projecting lug 63 on each end of the bar 58 carries a roller 64 that engages in a recess 65 in a sliding shoe 66 mounted in a guideway 67 in the carriage frame.

Then shoes 66 are moved in one direction the face of the profile bar may be tilted to the plane of line XX of Figure 8, and when they are shifted in the other direction the face of the profile bar 59 may lie in the plane of line Y-Y. The exact tilt of the profile bar may be adjusted as hereinafter described.

For moving the shoes 66 at opposite sides of the machine in unison, a shaft 68 is suitably supported in the carriage and extends thercacross. On one end of this shaft is a hand lever 69, this lever preferably being conveniently'located with respect to the hand wheel. Near opposite ends of the sha-ft are arms or cranks 70 whose outer ends are pivotally connected with links 7l. Links '7l are pivotally connected with the shoes 66 at 72. Vhen shaft 68 is rotated a slight amount, shoes 66 are reciprocated to control the angle of profile bar 59.

In order to frictionally hold the shaft 68 in any position to which it is set by lever 69, a suitable friction device, such as that shown in Figures ll and l2, may be used. This may include a fixed casing 73 in which is a fixed block of wood or other friction material 74. The shaft 68 passes through this sleeve 78 rotatedby means of a suitable Spanner wrench, the wooden disks are forced into frictional engagement with disk 75, tending to thereby frictionally hold the shaft against free rotation. Y

This arrangement makes it possible to rotate the shaft 68 to suitably rock the profile bar, but is sufficiently stri-i to hold the bar at the angle to which it is moved. The distance through which the shaft 68 may rotate is regulated by pin 68a and adiustable stop screws 68h, as shown in Figure 17, pin 68a being adjustably securec on the shaft.

The profile is set at an angle only when it is used for tr-oweling or smoothi lVhen it is used for tamping, it is set to bring its full face to bear on the material in the pallet. lhen used for tamping, the bar is rapidly reciprocated up and down by the toggle systems 55 to which motion is trans mitted by cranks 5?.

Cranks 57 are connected by a connecting, rod 80, as shown in tligure 4.

This rod carried in .suitable bearings 8l and has one end 82 pivotally connected at 83 with a link 84 having a hook 85 at its free end. he cured to this link is reciprocable section 86 of a control lever 87, sections 86 and 817 being slidably connected at 88. Section 87 operates on a segment 89. lllhen the lever is at the top of the segment, as shown in i 3 and 5, the hook 85 is out of drivi nection with a pin 96 on an oscillat 91 driven from a motor on thecarriagi/.e through gears 92. When the lever is lon ered, the hook may engage pin 96, where upon rod 8O will be reciprocated longitudinally to rapidly reciprocate the cross head and profile bar vertically through the toggle levers.

At 03 is a hand lever pivotally mounted on the carriage at Sli. rlhe upper end ol this .lever is slotted to releasahiy engage a pin t* on the end or rod lilith this leve rod S0 can be reciprcc-.rted by hand to misc or lower the tai'nping bar. ln order hat the handle will not swing hack and tot.. rod S0 is being operated hy power. ti; is disengaged from pin 05.

Tor the purpose ol preventing rod 80 troni being operated by power unintentionally, a rock shaft is provided on the carriage having a hand lever 0T thereon. rlfhis shaft is carried in hearings 08 on the carriage and has a crank on one end thereof pivotally connected with a transversely reciprocable locking pin through link 101.

vWhen pin 100 is projected, it extends under hooked link Se and'prevents this link and levers S6 and 87 from being lowered into driving relation with the pin Q0. Then it is retracted, it does not interfere with the operation or the lever.

rlhe shalt 9G has a l'urther function. llfhen the profile bar is being used 'for tron'- eling the block, a'liter it has been tamped, the bar should be. in its loivermost position. Alfter pigment or finishing material has been spread over the block or slab, the prolile bar should only be Vlowered to Within a. traction ot an inch ot its lonermost position. ll lowered too far, it would scrape the pigment or surfacing, While it lowered to the proper distance it VWill spread the pigment or surfacing.

ln order to gauge the proper limit :t'or spreading surfacing or pigment, transversely sliding blocks are provided on the carriage 102, these blocks being slidable on 103. They carry lugs or Wedges 104 having inclined surfaces. These Wedges are adapted to ride under lugs 105 on the toggle levers 55. The blocks 103 are operably connected with cranks 106 on shaft 9G through links 10iso that as locking pin 100 is projected into operable position, Wedges 10J: are forced under lugs 105 to litt the profile bar an amount proportional to the inclination oil' the lugs and length of their travel. Nuts at 108 may provide. an e'tlec'tive adjustment for the lugs. Set screws 109 on arms 110 on shaft 96, as shown in Figure 0, may contact with a part of the machine Yframe to limit the arcuate movement of shaft QG and thereoy provide an adjustment for theelleetive travel ot lugs 104.

Since the power operation ot the cross head is to be inoperative during the ll'inishing ot the block, it is litting that locking the pin 100 and the limiting .vedges or cams 10st be connected With a common operating element.

For the purpose of preventing operation ot shaft 96 by vibration, the detent mechanism shown in Figures 13 to 10, inclusive,

i Whi le or any other suitable detent is used. rlhe detent shown includes a lined member 111 having teeth 112 on the :tace thereof. Secured to the shaft by pin 113, or other suitable means, is a cage 1141- in which is one, and preferably three, spring projected deten'ts 115, the springs therefor being designated 116. The arrangement is such that when one detent is engaged in a notch or tooth of the lined disk 111, the other two detents bear against opposite faces of other teeth. One tooth is thus always fully engaged, While the other two detente tend to oppose each other, the teeth hei gelativelv small. l

For the purpose oit providing balance, the tainpig bar carries a rod 11S Whose upper end passes through a guide 110. About the upper end ot the head is a compression spring confined between guide i119 and nut and Washer 120@ on the rod.

ln order to remove excess material from the pallet, and to effectively spread the niaterial to the general contour ot the prolile bar, a scraper or striker bar 11i', as shown in Figures and 23, is braced against the liront of the machine.

in opera-tion, the carriage is moved to the position shov'n in litigare 1, vhile the cradle is dropped down, as shovvn in Figure A relatively dry cement mix, 'with suitable reinforcements, ir desired, is heaped onto the pallet, which is in its lowermost position. After making sure that sutlicient material is in the pallet and the corners thereo1 are full, the hand Wheel 45 is turned to feed the carriage over the pallet. At the same time the motor is operated to give the desired vertical camping movement to the prolile bar.

The striker bar 114 first spreads the ina-terial over the pallet and gives to the surface the conliguration, more or less, of the top of the slab to ie made. VEhe reciprocating tamping or prolile bar then passes o 'er the material, packing it into the pallet, the hand Wheel l5 being turned sloivly enough and gradually enough that the tamping may be completed on a single pass ot the machine.

rl`he profile. bar is then tilted so that its high edge is toward the direction or travel of the machine, this being done by rocking lever 69. rlfhen the profile bar is lowered by operation of hand lever 93, the driving motor disconn .cted by operation of levers 86 and 8T, and the carriage moved back over the slab. The prolile bar then has smoothing and troweling action. An inexper'enced operator is enabled to quickly and easily tainp and trovvel a slab with the machine, Whereas it is slovv and laborious Work for a skilled Workman to form a blork by the old methoc,

After the slab has been formed, it is frequently desirable to color or surface the slab. This may be done by sprinkling pigment,

a counter fur Ui..

such as dry red oxide of iron, and dry cement over the surface ot' the slab and spraying it with Water. This coating is Worked into the surface ot' the slab by lovvering the prolile bar as tar as permitted by Wedge 104 and lug 105, alternately tilting the profile bar and feeding the carriage in reverse directions over the slab. This Work requires but a minutes time. lt desired, the pigment may be initially applied in Wet form.

The completed slab may then be elevated with its pallet in the manner hereinbetore described and removed, either by the cradle mechanism hereinbetore described, or in any other suitable manner and a new pallet set in the machine.

rlhe formation of large roofing tiles or slabs may be easily accomplished in this machine, with relatively little labor and with a great saving of time over previous methods.

Various changes, modifications and departures from the speciiic construction shown are contemplated Within the spirit of my invention.

l claim:

l. fr machine tor forming rooting tiles and the like, including a supporting frame, a `i `ilet in the trame, a carriage movable over ne pallet, a driving gear for the carriage, means on. the carriage it'or tamping material in the pallet, and a driving mechanism for the tamping means, substantially as described.

A machine for forming roofing tiles and the like, including a supporting trame, a pallet in the trame, a carriage on the trame movable therealong over the pallet, and a. tamping and troweling means on the carriage, said tamping and trovveling means being reversely tiltable 'from a normal horizontal position, substantially as described. 3. A machine tor forming roofing tiles and the like, including` a support, a pallet receivingi frame in the support, a carriage on the frame movable therealong over the pallet receiving frame, tamping means on the carriage, and means for raising and lowering the pallet receiving Jframe, substantially as described.

4. A machine for forming roofing tiles and the like, including` a frame, a pallet received in the trame, a carriage movable along the `trame over the pallet and fixed against relative vertical movement in the trame, means for effecting` movement of the carriage, a tamping bar in the carriage, and means for driving the ta-mping bar, substantially as described.

5, A machine tor forming cement rooting tile and the like, including a frame, a pallet received in the frame, a carriage movable along the frame over the pallet, a tamping bar on the carriage, manually operable means for driving the carriage, and power operated means for actuating the tamping bar, substantially as described.

(i. A machine for forming cement rooting tile and the like, including a 'rame,a pallet received in the frame, a carriage movable sione; the frame over the pallet, a tamping bar on the carriage, means i'or operating the carriage, a power driven actuting means for the tamping bar, meansI for disconnecting the tamping bar With its actuating means, and manually operable means for also operating the tamping bar, substantially as described.

7. A machine for forming cement rooting tile and the like, including a supporting trame, a pallet received in the trame, a car riage movable along the trame cver the pal let, and a vertically movable profile bar-in the carriage disposed crossvfise oit the carriage and Which may be inclined transversely in opposite directions from a normal hori- Zontal position for effecting a troweling ac tion on material in the pallet, substantially as described.

8. A machine for `licrining cement rooting tile and the like, including a supporting iframe, a pallet received in the Jframe, a car- 'iage movable along the frame over the pallet, a vertically movable cross bar in the carriage and dispos-ed crosswise thereof, and means tor 'tilting the cross bar transversely of its length in either direction from a normal horizontal posit-ion, substantially as de scribed.

9. A machine for forming cement rooling tile and the like, including a supporting` trame, a pallet received in the trame, a carriage movable alongl the `lrame over the pallet, a .f'ert'ically movable cross bar in the carriage and disposed crossivise thereof, means mounted on the carriage for tilting the cross bar transversely oli its length, and other means on the carriage ior imparting' a vertically reciprocable motion to the profile bar, substantially as described.

l0. A machine for forming cement rooting tile and the like, including a. supporting frame, a pallet received in the frame, a carriage movable along the trame over the pallet, a vertically movable cross bar in the carriage and disposed crossivise thereof, means for tilting the cross bar transversely of its length, means for imparting a vertically reciprocable motion to the cross bar, other means tor moving the cross bar up and down manually, and means tor adjustably limiting the downward movement of the profile bar, substantially as described.

1v1. A machine for forming cement roof ing tile and the like, including a supporting frame, a pallet received in the frame, a cal'- riage movable along the frame over the pal let, a vertically movable cross bar in the carriage and disposed crosswise thereof, means for tilting the cross bar transversely of its length, a poiver drive for reciprocating,l the cross bar vertically, a hand operated means ttor reciprocating the cross bar, a r-eleasable connection tor the power drive for the cross bar, means operable tor limiting the lcross bar trom traveling to its lovfermost position, and a locl; operable upon the setting ot said limiting means to operable position'tor prcventinpY the actuation of the releasable con nection to dri ngi' position, substantially as described.

12. il machine 'for togminp' cement 'root ing; tile and th3 like, iucludinnj a supportingtrame, a pallet received in the trame, a carriage movable along the trame over the pallet, e. veiticall.- movaliile cross bar in the carriage and dispos-ed ci ossivi"e thercoi, means tor tilting; the cross bar transversely of its length, a povfer drivV tor reciprocating the cross bar vertically, a hand operated means for reciprocating the cross bar, a releasable connection lor the power drive for the cross bar, adjustable means operable for limiting' the cross bar from traveling` to its loivermost position, and a loch operab e npon the settingv ot said lin'iitingij means to opv era-ble position for preventing;l actuation ot the releasable connection to driving position, substantially as described.

13. ln a machine ot' the class described, a supporting; trame, a pallet receiving;` plattorni in the trame, means lor raising` and lowering' the pallet receiving' platform, worllingr head movable along' the trame over the platform when the same is in loivered posit? on, an inclined tracl; on the traine, and a pallet receiving cradle movaole along the tracl to receive a pallet from the receiving platform and carry it away, .substantially as described.

1d. ln a machine of the class described, a supporting timno, a pallet rcceivino plattorni in the trame, mean:` 'tor raisn fr and lowering;l the pallet receiving' platform, a working head movable alongl the traine over the platform when the same is in lowered position, an inclined track on the traine, and a pallet receiving cradle ioovable along the trackv to receive a pallet trom the receiving platform and carrjiT it away, said track havini,T a movable extremity which may be raised or lowered whereby the cradle may be dropped out ot the path oit the movable working` head, snbstantialli,7 as described.

15. 1n a machine ot the class described, a pallet support, a carriage movable over the support, and a prolile bar in the carriage tiltable transversely in opposite directions trom a normal position and operable tor tainping` or for troweling material in a pallet on the pallet support, substantially as described.

16. ln a machine of the class described, a .f'ertically movable pallet support, a pallet therein, a carriage movable over the pallet, and a reciproca-ble tamping bar in the carriage, substantially as described.

17. ln a machin-e of the class described, a pallet support, a pallettherein, a carriage movable along the support over the pallet, and a vertically movable cross head in the carriage having a transversely` reversely tiltable prolile bz; suspended therefrom, slibstantially as described.

18. ln a machine otl the class described, a pallet support, a pallet therein, a carriaoc movable along the supportover the palla vertically movable cross head inV thecarringe having a transversely tiltable proilile bar suspended ther-strom, means tor tilting` the profile bar, and means tor trictionally holding' the prolile bar in the position in which it is set, substantially as described.

1Q. ln a machine of the class described, a palletI support, a palletY therein, a carriage movable along the support over the pallet, a vertically movable cross head in the carhavino' a transversely and reversely tiltc ble prolile bar suspended therci'rom, and an adjustable limiting means tor limiting` the tilting movement of the proilile bar.

Qt). ln a machine or" the class describal, a pallet support` a pallet therein, a sie movable alongV the support over the pallet, a vertically movable cross head in the carriage havngr a profile barl suspended therefrom and tiltable transversely in opposite directions from a normal horizontal positioi and means for adjust-ably limiting' the tiitablo .ioveinent oit the profile bar in cach direction trom its normal position.

2l, ln a machine ot the class described, a pallet receiving frameN a carriage on the frame, a protected traelrvvay along cach side ot tlie trame which is enclosed at the top and sides to exclude dirt, rollers on the cal'- riage engaging in the protected tra livav tor normally supporting` the carriage, and a reciprocable tamping means on the carridge..

In testimony ivhereot l have hereunto set my hand.

nur 

